Embedded ship bilge well sealing test device

Abstract

An embedded ship bilge well sealing performance test device comprises a sealing plate, a sealing rubber strip, a pre-tightening mechanism, a supporting lever, a handle, an inflation pipeline and a pressure release valve, according to the embedded ship bilge well sealing performance test device, the sealing rubber strip is attached to a ship body plate, when air is injected into a bilge well cabin, air pressure can form a counter-acting force to tightly attach the sealing plate to the ship body plate, and therefore the sealing performance of the bilge well is improved. The cabin sealing device is provided with the pre-tightening mechanism, the cabin is sealed firstly, then air is injected into the cabin, the fitting degree of the sealing plate and a ship body plate is greatly improved through the counter-acting force of the air, and the cabin sealing device is simple and practical in structure, light in weight, easy and convenient to operate, free of hoisting during operation, capable of being operated by two persons and high in practicability. And meanwhile, the damage of subsequent procedures to the coating is reduced. And the sealing plate can be repeatedly used, welding is not needed, and the purposes of reducing cost and increasing efficiency are truly achieved.

Description

Technical Field

[0001] This utility model relates to the field of shipbuilding and maintenance technology, and in particular to an embedded ship sewage well sealing test device. Background Technology

[0002] Ship sewage wells are equipment used on ships to collect sewage, including toilet wastewater, kitchen wastewater, shower wastewater, etc. If the sewage wells are not properly sealed, they can cause serious environmental pollution and affect water quality and the ecological environment.

[0003] The sealing test of sewage well compartments is an essential part of shipbuilding and repair. Pressure testing of sealed compartments is conducted to verify their sealing performance, ensuring the ship's safety and reliability. By performing pressure tests, it can be determined whether the compartment's sealing meets design requirements, thus ensuring the ship can withstand external pressure changes during navigation and preventing leaks or other safety issues caused by poor sealing. Furthermore, this test helps to identify potential vulnerabilities or defects for timely repair, thereby guaranteeing the safe and stable operation of the ship.

[0004] Ship sewage well covers are basically divided into two types: bolted covers and boltless covers. The tightness test for sewage wells with bolted covers is relatively simple. Two pressure gauges are installed on the cover, the bolts are tightened to seal the cover, high-pressure air is injected into the sealed chamber, and the test is completed if there is no pressure drop after 30 minutes. However, the tightness test of sewage wells without bolt-on covers is quite complex. Existing technical solutions involve welding steel plates to cover and seal the outfitting components of the sewage well before the air-filling test during the sectional construction process. Two holes must be pre-drilled in the center of the steel plate, and two connecting blocks must be installed as pressure gauge and air inlet valve interfaces. Simultaneously, the pipes inside the sewage well compartment are sealed to form a closed chamber. Compressed air is then injected into the sealed chamber. If the pressure remains stable without drop, it indicates no air leakage at the weld seams; otherwise, the seal is poor. This method wastes significant manpower and resources during welding, installation, and removal of the sealing plates, and the plates cannot be reused. It also demands a high level of skill from the construction personnel and can damage the base material. Therefore, the industry urgently needs an embedded shipboard sewage well tightness testing device that can solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an embedded ship sewage well sealing test device that eliminates the need for welding and removing the sealing plate at the well cover, and the sealing plate can be reused.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An embedded ship sewage well sealing test device includes a sealing plate, sealing strips, a pre-tightening mechanism, support bars, a handle, an inflation pipeline, and a pressure relief valve. The pre-tightening mechanism includes a portal plate, a nut, a lead screw, and a rotating handle. Sealing strips are provided around the upper edge of the sealing plate. There are four pre-tightening mechanisms and two support bars. Each support bar passes through the inner cavity of two portal plates and rests on the hull plate at both ends. Nuts are welded to the upper end of the portal plates. The lead screw can be rotated by cooperating with the nut. The lower end of the portal plate is fixed to the sealing plate by fasteners through a support. The sealing plate is provided with a handle, an inflation pipeline, and a pressure relief valve.

[0008] The aforementioned embedded ship sewage well sealing test device has a sealing plate limiting plate on the sealing plate. There are six or more sealing plate limiting plates, which are evenly distributed around the perimeter of the sealing plate, and their positions and dimensions correspond to the dimensions of the lower edge of the sewage well opening.

[0009] The aforementioned embedded ship sewage well sealing test device has a support bar limiting block on the lower surface of the support bar, and the arrangement dimensions of the support bar limiting block correspond to the dimensions of the upper edge of the sewage well opening.

[0010] This utility model has the following advantages:

[0011] In this invention, a sealing strip is attached to the hull plate. Simultaneously, when air is injected into the sewage well compartment, the air pressure creates a reaction force that tightly seals the sealing strip to the hull plate. This invention includes a pre-tightening mechanism, allowing for the compartment to be sealed first, followed by air injection. The reaction force of the gas significantly improves the fit between the sealing strip and the hull plate. This method can be used to test the tightness of welds within sealed compartments. This invention is simple and practical in structure, lightweight, and easy to operate. No hoisting is required during operation; two people can work on it, eliminating the need for welding and assembly workers, effectively reducing the workload of airtightness testing and improving work efficiency. This invention can solve the airtightness test of sewage wells in areas such as cargo holds, engine rooms, main engine pits, and emergency subsea valve boxes. Generally speaking, as long as the airtightness of sealed compartments can be achieved during the sectioning process, comprehensive coverage can be achieved, ensuring the integrity of the section, avoiding subsequent full-compartment pressurization on the slipway, reducing scaffolding erection, and greatly improving slipway utilization. This also reduces damage to the coating in subsequent processes. Furthermore, this sealing plate can be reused without welding, truly achieving the goal of cost reduction and efficiency improvement. Attached Figure Description

[0012] Figure 1 This is a top view of the present invention;

[0013] Figure 2 This is a sectional view along line AA;

[0014] Figure 3 This is a schematic diagram of the pre-tensioning mechanism;

[0015] The labels in the diagram represent: 1. Sealing plate, 2. Sealing strip, 3. Sealing plate limiting plate, 4. Pre-tightening mechanism, 5. Support bar, 6. Handle, 7. Inflation pipeline, 8. Pressure relief valve, 9. Hull plate, 10. Support bar limiting block, 4-1. Door plate, 4-2. Nut, 4-3. Lead screw, 4-4. Rotary handle. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] This utility model discloses an embedded ship sewage well sealing test device, such as... Figure 1 and Figure 2 As shown, the device includes a sealing plate 1, a sealing strip 2, a pre-tightening mechanism 4, a support bar 5, a handle 6, an inflation pipe 7, and a pressure relief valve 8. The pre-tightening mechanism 4 includes a portal plate 4-1, a nut 4-2, a lead screw 4-3, and a rotating handle 4-4. The portal plate 4-1 is generally shaped like a door and is connected to the sealing plate 1 via bolts and nuts through a support. The support bar 5 is equipped with a support bar limit block 10, and both ends rest on the upper surface of the hull plate 9. By rotating the lead screw 4-3 using the rotating handle 4-4, the sealing plate 1 is pulled upwards and tightened, thereby making the sealing plate 1 fit tightly against the lower surface of the hull plate 9.

[0018] This utility model discloses an embedded ship sewage well sealing test device. Six sealing plate limiting plates 3 are welded onto the sealing plate 1. The assembly dimensions of the outer contour of the sealing plate limiting plates 3 must be 1mm smaller than the inner diameter of the lower edge of the sewage well opening. At the same time, the sealing plate limiting plates 3 also restrict the position of the sealing plate 1 to prevent the sealing strip 2 from being misaligned. Since the sealing plate 1 is relatively thin, and welding will cause deformation, post-weld leveling is required. The sealing strip is glued and fixed to the upper surface of the sealing plate with 801 glue. The two through holes on the embedded sealing plate need to be drilled and tapped to facilitate the installation of the air inflation pipe 7 and the pressure relief valve 8.

[0019] This utility model discloses an embedded ship sewage well sealing test device. The support bar 5 is a square tube. The assembly size of the outer contour of the support bar limiting block 10 on both sides of the support bar 5 must be 1mm smaller than the inner diameter of the upper edge of the sewage well opening. The support bar limiting block 10 plays the role of limiting the position of the support bar 5 and preventing the support bar 5 from falling off.

[0020] The working principle of the embedded ship sewage well sealing test device of this utility model is as follows:

[0021] Place sealing plate 1 inside the sealed compartment, install support bar 5 on the sewage well opening, and ensure sealing strip 2 adheres to the lower surface of hull plate 9. Manually rotate handle 4-4 to pre-tighten sealing plate 1. Then, inject high-pressure air into the sealed compartment. The air pressure creates a reaction force, tightly sealing sealing plate 1 against the lower surface of hull plate 9. A pressure gauge is installed on the inflation line 7 to verify that the air pressure meets the test requirements. To prevent excessively high-pressure air from being injected, a pressure relief valve 8 is provided.

Claims

1. An embedded ship sewage well sealing performance testing device, characterized in that: The package includes a sealing plate (1), a sealing strip (2), a pre-tightening mechanism (4), a support bar (5), a handle (6), an inflation line (7), and a pressure relief valve (8). The pre-tightening mechanism (4) includes a portal plate (4-1), a nut (4-2), a lead screw (4-3), and a rotating handle (4-4). A sealing strip (2) is provided around the edge of the upper surface of the sealing plate (1). There are four pre-tightening mechanisms (4) and two support bars (5). Each support bar (5) passes through the inner cavity of two portal plates (4-1) and rests on the hull plate (9) at both ends. A nut (4-2) is welded to the upper end of the portal plate (4-1). The lead screw (4-3) can rotate by cooperating with the nut (4-2). The lower end of the portal plate (4-1) is fixed to the sealing plate (1) by fasteners through a support. A handle (6), an inflation line (7), and a pressure relief valve (8) are provided on the sealing plate (1).

2. The embedded ship sewage well sealing test device according to claim 1, characterized in that: A sealing plate limiting plate (3) is provided on the sealing plate (1). There are more than six sealing plate limiting plates (3) evenly distributed around the sealing plate (1). The size of the setting corresponds to the size of the lower edge of the sewage well opening.

3. The embedded ship sewage well sealing test device according to claim 1, characterized in that: A support bar limiting block (10) is provided on the lower surface of the support bar (5), and the arrangement size of the support bar limiting block (10) corresponds to the size of the upper edge of the sewage well opening.

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